Hi Friends,

Case A:

1, 3, 5, 7, 9.....

To find the Nth term for the above type of progression, the equation is:

Nth term = a + (n-1)d

where a = initial term

d = common difference

n = number of terms

Case B:

1, 2, 4, 7, 11, ....

My question is: Is there anygeneral equationto find the Nth term for the above type of progression ?

Notethat the common difference is variable but has a constant progressive rate i.e, 1,2,3,4,.... and iteself has a common difference of 1

Thanks in advance.

Regards.